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Finding the Fourth Proportional to 103,440.24, 142,747.68 and 58,728.24

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Solution

The fourth proportional to 103,440.24, 142,747.68 and 58,728.24 is: 81,045.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,440.24 : 142,747.68 = 58,728.24 : x
  2. Step 2: Convert to fraction form
    103,440.24/142,747.68 = 58,728.24/x
  3. Step 3: Cross multiply
    103,440.24x = 142,747.68 × 58,728.24
  4. Step 4: Simplify right side
    103,440.24x = 8,383,320,010.48
  5. Step 5: Solve for x
    x = 8,383,320,010.48/103,440.24
  6. Step 6: Final answer
    x = 81,045.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.